Removed redundant code for unexisting file.
Complete tests for actions: delete, copy, move.
Changed check_path function first parameter from method get, class Files. Previous parameter "dirname" caused check_path function to return always true so the if statement was skipped.
Complete tests for Files/get
Merge pull request #37 from Roxana28/improve_coverage_test_server

Improve coverage test server
Merge branch 'master' of github.com:corso-python-prato/share-system-team2 into pass_check